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they are similar right triangles. notice 2 times DE equals BC and 2 times AB equals AD. 2 times AE equals AC. the small triangle has been dilated by a factor of two. this does not change the shape, only the size

Answer:

ΔABC and ΔADE both have a common angle (∠A). And m∠AED = m∠ACB = 90°. So, by the AA criterion for similarity, the two triangles are similar.

Step-by-step explanation:

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